Game now runs in the same resolution of your Windows OS (it used to run always in 640x480). Attention: You'll only get a "pixel perfect" look if your resolution is a multiple integer of 240p (like 480p or 720p).

Linear filtering is gone (many complaints about blurry images).

Screen noise and scanlines are turned off by default (these effects made more sense when linear filtering was used). But you can activate them if you like ("F6" and "F7" on keyboard / "LB" and "RB" on gamepad). Attention: Scanlines will only be displayed correctly in resolutions like 480p or 720p.

A new sound engine is used. Audio files are about six times smaller (without noticeable quality loss).

Tcheco now can jump using "Space" and "up" on keyboard. The original key ("Z") still works.

You can reset the game ("F5" or "X" on gamepad).

Challenge is more balanced in some stages.

Error messages that used to appear after closing game apparently are gone.

There was a small lag between pressing a button and Tcheco's reactions (walk and jump) - but now it's gone. This is probably the most important of all updates. You'll see that Tcheco feels "less heavy" and it makes the game much more enjoyable IMO.

Dozens of little optimizations on original code. The game will probably run better on old computers.